return &TCPConn{}, nil
			}

			primaries := makeAddrs(tt.primaries, "80")
			fallbacks := makeAddrs(tt.fallbacks, "80")
			d := Dialer{
				FallbackDelay: fallbackDelay,
			}
			const forever = 60 * time.Minute
			if tt.expectElapsed == instant {
				d.FallbackDelay = forever
			}
			startTime := time.Now()
			sd := &sysDialer{
				Dialer:          d,
				network:         "tcp",
				address:         "?",

		if timeRemaining < saneMinimum {
			timeout = timeRemaining
		} else {
			timeout = saneMinimum
		}
	}
	return now.Add(timeout), nil
}

func (d *Dialer) fallbackDelay() time.Duration {
	if d.FallbackDelay > 0 {
		return d.FallbackDelay
	} else {
		return 300 * time.Millisecond
	}
}

func parseNetwork(ctx context.Context, network string, needsProto bool) (afnet string, proto int, err error) {

pkg mime/quotedprintable, type Reader struct
pkg mime/quotedprintable, type Writer struct
pkg mime/quotedprintable, type Writer struct, Binary bool
pkg net, type Dialer struct, FallbackDelay time.Duration
pkg net, type OpError struct, Source Addr
pkg net/http, type Request struct, Cancel <-chan struct
pkg net/http/fcgi, var ErrConnClosed error
pkg net/http/fcgi, var ErrRequestAborted error

		{"Dialer", Type, 1},
		{"Dialer.Cancel", Field, 6},
		{"Dialer.Control", Field, 11},
		{"Dialer.ControlContext", Field, 20},
		{"Dialer.Deadline", Field, 1},
		{"Dialer.DualStack", Field, 2},
		{"Dialer.FallbackDelay", Field, 5},
		{"Dialer.KeepAlive", Field, 3},
		{"Dialer.LocalAddr", Field, 1},
		{"Dialer.Resolver", Field, 8},
		{"Dialer.Timeout", Field, 1},
		{"ErrClosed", Var, 16},
		{"ErrWriteToConnected", Var, 0},